Humming mask HM-G3
The Humming mask is easy to use, there is no Bluetooth or Smartphone needed. Just follow some simple steps and after that, the program will remember your settings. Changing your preferences is also easy to do. Please read the user manual online or download and print it for personal use. (Click the pictures for the Quickstart or the manual to download). For any more questions, pls send us an email, or use the answering form.
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